Spray-burner.



E. W. DUNN.

SPRAY BURNER.

APPLICATION FILED DEO.11.1911.

1,051,831 Patented Jan. 28, 1913.

EMANUEL W. DUNN, OF SAN FRANCISCO, CALIFORNIA.-

sneer-BURNER.

Specification of Letters Patent. Patented J an. 28,1913.

Application filed December 11, 1911. Serial No. 665,056.

To all whom it may concern.-

Be it known that I, EMANUEL W Dunn, a citizen of the United States, res ding in the city and county of San Francisco and State of California, have invented new and useful Improvements in Spray-Burners, of which the following is a specification.

This invention relates to an apparatus having means whereby oil is atomized or finely divided by steam or air, and the mixture injected into'a combustion chamber.

The invention consists of the parts and the construction and combination of dparts, as hereinafter more fully describe and claimed, having reference to the accompanyin drawings, in which %igure 1 is a vertical sectional view through the device. Fig. 2 is a cross section I on line X X Fig. 1. Fig. 3 is a bottom comprising a casing are adapted to be lan view of the apparatus. Fig. 1 shows a modification ofthe mixture controlling means. Fig. 5 is a perspective of a spraying nozzle.

In certain oil burning systems of my construction and invention, I admit 011 and a spraying medium to a proportion mg device, such asindicated in thepresent instance as or body portion 2; the oil and spraying medium both being under iven pressures automatically controlled by evices utilized in the system,

The present apparatus is designed to receive he oil and Spraying medium at their given definite and automatically controlled pressures; means being provided in the bod 2 whereby certain definite ratios as to vo ume of the oil and spraying medium maybe obtained.

Oil under fixed and controlled pressure 18 admitted to a central channel 3 at a suitable connection 4' the oil channel 3 extending upwardly within the body and being registered at its upper end with a port 5, having a wide mouth, in a plug 6 movably fitted in the body 2., The port 5 opens into a distributin or pressure equalizing pocket 7 from w ih there radiate a number of graduated or differently sized delivery ports 8, which may rangetfrom a very smal opcning to one of much greater area; as many of the ports 8 being provided radially 1n the valve plug 6 as one be desired to pro dues or feed certain do mite proportions or quantities of oil. The graduated ports 8 turned to discharge into a recess 9, in front of which may be inserted a blind plug 10, which when in place, directs the oil downwardly into a channel 11 which is directed forwardly at its lower end, as at 12.

By providing a wide mouth for port the oil may freely flow into the pocket 7 in which the oil will accumulate at a pressure substantially equal to that in the channel 3. The variously sized discharge openings or radial ports 8 may, one at a time, be turned into register with the outlet 9 and the oil in each port 8 is constantly subjected to-a uniform pressure with that in the channel 3 which may be such as desired.

It is important in order to form supply that the oil flow evenly and readily through the valve, and to that end I find it expedient to form the pocket 7 in which an ample supply of oil may collect at full or. balanced pressure and to arrange and forn. the graduated ports 8 in the most insure a-- uniplished by drilling radially through the wall of the plug into the chamber 7, the egress 8 being shown on a lower plane than the wide port 5. By this structure the oil flows in a strai ht path of uniform area from the chamber into aperture 9.

Under certain conditions and requirements, it may be desired to remove the plug 10 and insert a form of discharge nozzle or direct fashion; this being readily accomtip 13, Fig. 5, which is perforated from end to end with an orifice of suitable diameter or area, and when the plug or tip 13 is screwed into the valve body 2, it is designed to cut ofl? the flow of oil into the passageway 11 so that the oil admitted to the duct or channel 3 when assing through the valve port 5 and one of t e selected graduated raw dial ports 8 will be forced to dischar e through the tip 13. atomization is lease of the oi under-hi h pressure and temperature without the aid of a spraying medium in the apparatus.

I have found 1t extremely expedientand efficacious to increase the temperature of the oil as it flows through the channel 3, 105..

ing chamber 15 through an inlet connection In this instance -t e roduced by the sudden re 16 at the lower end of the body 2, the steam inlet passageway 17 being carriedupwardlyt somewhat. above the bottom of thetjacket .or body 2 so that moisture of the steam may beprecipitated to the bottom of the cham:

berfrom which condensed material'may be drained through an opening 18. By reason of the provision of the heating jacket or chamber 15, the oil, before issuing from the proportioning device, may be raised to the desired temperature and its viscosity nicely determined and heldsteady, thereby rendering the issue of oil more free, steady and reliable,- prepared for quick and per-- fect atomization. y

Certain establishments being provided with steam plants, the present apparatus is designed to utilize the steam for the dual function of increasing the temperature of the voil passing through the. channel 3and as the means for spraying the oil issuing from 'the'proportiomng device, and: for that purpose I introduce in the body 2 suitable means whereby the steam from the chamber. 15 maybe admittedto a port having a wide mouth 19 and & rpocketor chamber 19 in the valve plug 6. a The port, 19 communi cates with a series of variously sized radial ports 20 which are so arranged, relative to the oil ports 8, that the ports 8 and 20*are adapted to beturned into registration iwith the discharge channel 9 for the oil-and a channel 21 for the steam; that is. to say, the smallest port 8 and the smallest port 20 are in line longitudinally of'the plug (gum nextlarger sizes of the ports 8 and 20 are alined and so on until the, largest of the. ports 78 and the largest of the ports 20 are alined. Thus it will be seen that by.so arranging the oil ports and the steam portsthat any alined set or two of them will produce a given definite, proportionate .volu tions of the valve 6. I

It is one of the purpose'sfof this invention t Pl-ovide means whereby air may be used as .the. spraying medium in lieu of. steam,

if desired, thus the apparatus is capable of use with either air or steam asthemeans' for finely dividing the fuel used, and to that end the body2of the device is provided with an air chamber 22,. of suitable proportions, which is shown in the present instance as substantially surrounding thev steam acket -15, whichin turn surroundsthe oil channel 3.

In order toenable the operator to select at his desire either steam or airas a spraying medium to be admitted into the port 19 of the valve 6, there is mounted in the casing 2 a valve 24, Fig. 2, extending transversely and having a radial-port 25 which may be turned to register with the interior ofvthe steam jacket 15; the part 25 communieating with a central duct 26 in the valve 24; land the duct being provided with an controlled at alltimes to be etof oil and steam or a r for certain posiopening valve6.

On the opposite side of'the valve 24 from the port 251s provideda port 28' communi eating with the central duct 26;the port 28 being arranged in the plug 24 so that it may be turned to register and communicate with the interior. of the air chamber 22, at which time vthe ,port 25 will-have beenvreversed so as to cut out communication with the steam chamber 15. Thus the operator has the privilege of selecting 'air under suitable 27 leading to the port.19 of the" pressure from the chamber 22 to be admitted 1 i to the port 19 of the valve 6, thence dis'- charging through one ofthe openings 20 into the ejector port or channel 21-.

When oil alone is to be dischargedby the to such a position that both the-ports 25 and 28 are arranged in neutral,finoperative position; so that no communication is had w1th the steam chamberifi or the "air chamgber 22, 1n which case-no air' or, steam will be admitted to, the-port i9 of the valve 6.

; Assuming that a certain quantity of, oil (at a given pressure which is automatically 1 proportionate .valve 6,.the operator turns thevalve 24 to a given pressure-got steam in the chamber 15 or air in the chamber 22) he wanted, it isnecessary that the operator have some .index by which he may determine, which of the proportioning sets of ports 820 are in registration with their respective channels 921, and therefore the plug 6 is shown as provided with a suitable operating handle 30, having an index finger; or other suitable indicator 31 which is. adapted to register withcertain gradations .32 on 'rthe exterior of the upper portion or side of the vbody 2.

The gradations 32 willbe so' marked that. the operator will have means of knowing which of the variously sized ports 820- are at any given time registering-with their 7 signed to produce a mixture of a given quantity of oil and steam or air, this proportion will always remain constant irrespective of the particular set of calibrated ports .8 -20 that may be selected to discharge .difie'rent quantities of the mixture.

The oil pressure being always held at a greater pressure than the steam or a air assures a constant flame. Inasmuch as the proportioning device or apparatus heretofore described is mainly for the purpose of accurately proportioning a hydrocarbon and a spraying medium, it is desirable to provide in the apparatus means for the thorough commingling of the oil and spraying medium after the latter pass from the discharge channels 1221, and "for this mixing there is provided a suitable device as a chamber 33 having a tortuous passageway 34 through which the two may pass and be thoroughly mixed before issuing from the chamber 33.

In Fig. 4 there is shown a modification of the means for controlling the admission of steam or air to the mixing valve 6. In this instance I employ a long plug 35 adapted to reach sufiiciently far into the casing 2 to out off the inlet of air, and there is provided a short plug 36, which, when inserted in the casing 2', leaves the steam port from the steam jacket 15 open so that steam may be admitted. The interchange of these plugs 35-36 will correspondingly change the fluid used as the spraying medium.

The oil ports 8-20 are respectively arranged to mix oil and a spraying medium in such proportions as to produce as perfect an atomization as possible.

Having thus described my invention, I claim and desire to secure by Letters ent is-- 1. A device of what Patthe character described, comprising a casing, having a mixing chamber and having a channel for oil, a chamber for air, and a steam jacket inclosing the oil channel; and a turning plug mounted in the casing between said chamber and the mixing chamber and having ports adapted to communicate with said oil channel and steam jacket or air chamber, said ports being graduated in size and adapted to admit to the mixing chamber fixed proportions of oil and an atomizing fluid.

2. In a device of the character described, a casing having an 'oil channel, a steam jacket surrounding 'the same, and an air chamber, an outlet'from the oil channel, a second outlet adjacent the same, means for placing either the :steam jacket or the air chamber in communication with said second outlet, and means for regulating the flow of fluid through both said outlets.

3. In a device of the character described, a casing having an oil channel, a steam jacket surrounding the same, and an air chamber, an outlet from the oil channel, a second outlet adjacent the same, means for placing either the steam jacket or the air chamber in communication with said second outlet, and means for regulating the flow of fluid through both said outlets, said lastnamed means comprising a valve having series of graduated ports for the passage of various quantities of said fluids in definite proportions.

4. In a device of the character described, a casing having an oil channel, a steam jacket surrounding the same, and an air chamber, an outlet from the oil channel, a second outlet adjacent the same, means for placing either the steam jacket or the air chamber in communication with said second outlet, and means for regulating the flow of fluid through both said outlets, said means including a valve having fluid passages with pressure equalizing chambers arranged therein and said valve having radial ports (1;: various areas extending from said cham- 5. In a device of the character described, a casing having an oil channel, a steam jacket surrounding the same, and an air chamber, an outlet from the oil channel, a second outlet adjacent the same, and means for'regulating the flow of fluid through both said outlets, said means comprising a valve having series of graduated ports for the passage of various quantities of said fluids in definite proportions, means for cutting off both the steam and air or admitting either to the valve, and means for indicating the position of any of the graduated ports.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

EMANUEL W. DUNN. Witnesses:

CHAnLns EDELMAN, C. J. SWENSON.

Copies of this patent may be obtained for five cents each, by addressing the Washington, D. C."

Commissioner of Patents, 

